Reggie Singh, the brother of slain Indian origin policeman Ronil "Ron" Singh has said he supports President Donald Trump's efforts on border security so that others do not experience what his family has been going through since the incident.

On December 26, the 33-year-old Corporal Ronil Singh, of the Newman Police Department was shot and killed allegedly by an illegal migrant during a traffic halt.

Trump during a visit to the southern border state Texas on Thursday to push for his arguable U.S.-Mexico border wall plan, attended a border patrol roundtable at McAllen, where Reggie Singh was seated next to the president.

In that respect, Trump said: "I watched a family right around Christmas time... suffer and I'd like to ask Reggie, maybe you could say a few words about your incredible brother, the job he was doing. He was so beloved by the people of the department and beyond the department."

Reggie Singh told the president, "The way he (Ronil Singh) was killed, what my family is going through right now, I do not want any other family, law enforcement person to go through that. Whatever it takes to minimize... put a stop to it, my family fully supports it," Reggie Singh said.

In the past few days, Trump has made it a point to mention the killing of Ronil Singh by an illegal immigrant to build a beefed-up case in favor of stronger border security to forbid entry of illegal immigrants.

"We are deeply moved to have with us Reggie Singh, whose brother, Ronil Singh, incredible guy. I mean, I watched, and I've rarely felt worse and watching news of our nation than watching your family and the love that you have for your brother," Trump said.

During the roundtable meeting, Reggie Singh said he and his brother are originally from Fiji.

"He (Ronil) always wanted to be in law enforcement. So legally we migrated to America to fulfill his dream of joining the law enforcement," he said.

"English is our second language. He worked on that, got his education, applied for law enforcement agency and he was asked to get his citizenship. He worked towards that and he became a cop, K-9, Corporal K-9," Reggie Singh said.

"At 33, Ronil Singh was cremated and I had to pick up his remains. It breaks my heart and no one should ever go through that. Seeing a five-month-old baby looking for his dad, no one should ever go through that on Christmas Day," he told Trump.

The president replied, "We are with you. You know that, right."

"That was a tough one, too. That was a tough one for a lot of people, not only the family, for a lot of people in this country. That was a tough thing to watch," Trump said.

"I can see that, the way it came through. It came through loud and clear. And there are so many other people who have the same - nobody covers them..., nobody talks about how unfair it is to the victims of these brutal killings," he said.

On Tuesday, Trump spoke with the family members and law enforcement colleagues of Singh, a native of Fiji who joined the force in July 2011 and said America's heart broke the day the young officer was "savagely murdered" in cold blood by an "illegal alien".

The sharp differences between the Trump administration and the opposition Democrats over border security have resulted in a partial government shutdown, which entered its 20th day on Thursday, making it the second-longest in history after the 21-day shutdown in 1995-96.